Avène Sunsitive Sunscreen Serum is an ultra-lightweight sunscreen with SPF50+ protection that leaves the skin hydrated, with a dewy glow. Suitable for sensitive skin and enriched with hyaluronic acid, vitamin E and aloe vera for hydration and antioxidant properties. Apply 20 minutes prior to sun exposure and reapply at least every 2 hours or after 40 minutes of swimming or sweating.